#define  _CRT_SECURE_NO_WARNINGS 1

#include <stdio.h>
#include <ctype.h>

int main()
{
	printf("%d\n", toupper('a'));
	printf("%d\n", toupper('0'));


	//printf("%d\n", tolower('A'));
	//printf("%d\n", tolower('0'));


	//printf("%d\n", isupper('A'));


	//printf("%d\n", islower('a'));
	//printf("%d\n", islower('A'));



	//printf("%d\n", isalnum('3'));
	//printf("%d\n", isdigit('a'));
	//printf("%d\n", isdigit(4));


	//printf("%d\n", isalnum('a'));
	//printf("%d\n", isalnum('3'));
	//printf("%d\n", isalnum('.'));

	/*printf("%d\n", isalpha('a'));
	printf("%d\n", isalpha('A'));
	printf("%d\n", isalpha('.'));*/
	return 0;
}